103029991 has 2 divisors, whose sum is σ = 103029992. Its totient is φ = 103029990.

The previous prime is 103029947. The next prime is 103030033. The reversal of 103029991 is 199920301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 103029991 - 2⁷ = 103029863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103029391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51514995 + 51514996.

It is an arithmetic number, because the mean of its divisors is an integer number (51514996).

Almost surely, 2^103029991 is an apocalyptic number.

103029991 is a deficient number, since it is larger than the sum of its proper divisors (1).

103029991 is an equidigital number, since it uses as much as digits as its factorization.

103029991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 103029991 is about 10150.3690080706. The cubic root of 103029991 is about 468.8003068734.

The spelling of 103029991 in words is "one hundred three million, twenty-nine thousand, nine hundred ninety-one".